The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 31, 2015
Filed:
Aug. 13, 2012
Friedrich Eschmann, Bischofsheim, DE;
Ralf Allmannsdörfer, Mainz-Kastel, DE;
Johannes Münzer, Bad Schwalbach, DE;
Sylvia Heilhecker, Nauheim, DE;
Jean-paul Simoes, Walferdange, LU;
Friedrich Eschmann, Bischofsheim, DE;
Ralf Allmannsdörfer, Mainz-Kastel, DE;
Johannes Münzer, Bad Schwalbach, DE;
Sylvia Heilhecker, Nauheim, DE;
Jean-Paul Simoes, Walferdange, LU;
Other;
Abstract
In a blast furnace plant, at least three regenerative heaters are cyclically operated on blast and on gas: while a regenerative heater is operated on gas, hot flue gas is produced and caused to flow through the regenerative heater so as to heat the heat storage elements; and while a regenerative heater is operated on blast, process gas, i.e. a CO-rich fraction of the top gas, is blown through the regenerative heater so that the process gas takes up heat from the heat storage elements, such that during a changeover of a regenerative heater from on-blast to on-gas operation, the regenerative heater is purged from process gas using flue gas collected after having flown through at least one of the regenerative heaters.